package main

import (
	"fmt"
	"time"
)

func main() {
	defer func() {
		a := 1
		fmt.Println("defer world", a)
	}()
	for i := 0; i < 10; i++ {
		go func() {
			fmt.Println("world")
		}()
	}

	fmt.Println("你好，世界")
	time.Sleep(time.Millisecond * 1)
}
